74729782 has 4 divisors (see below), whose sum is σ = 112094676. Its totient is φ = 37364890.

The previous prime is 74729777. The next prime is 74729791. The reversal of 74729782 is 28792747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28792747 = 17 ⋅1693691.

It is a super-3 number, since 3×74729782³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18682444 + ... + 18682447.

It is an arithmetic number, because the mean of its divisors is an integer number (28023669).

Almost surely, 2^74729782 is an apocalyptic number.

74729782 is a deficient number, since it is larger than the sum of its proper divisors (37364894).

74729782 is a wasteful number, since it uses less digits than its factorization.

74729782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37364893.

The product of its digits is 395136, while the sum is 46.

The square root of 74729782 is about 8644.6389166928. The cubic root of 74729782 is about 421.2092549825.

It can be divided in two parts, 7472978 and 2, that multiplied together give a square (14945956 = 3866²).

The spelling of 74729782 in words is "seventy-four million, seven hundred twenty-nine thousand, seven hundred eighty-two".